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impeller::testing::MetalScreenshot Class Reference

A screenshot that was produced from MetalScreenshotter. More...

#include <metal_screenshot.h>

Inheritance diagram for impeller::testing::MetalScreenshot:
impeller::testing::Screenshot

Public Member Functions

 MetalScreenshot (CGImageRef cgImage)
 
 ~MetalScreenshot ()
 
const uint8_t * GetBytes () const override
 Access raw data of the screenshot. More...
 
size_t GetHeight () const override
 Returns the height of the image in pixels. More...
 
size_t GetWidth () const override
 Returns the width of the image in pixels. More...
 
size_t GetBytesPerRow () const override
 Returns number of bytes required to represent one row of the raw image. More...
 
bool WriteToPNG (const std::string &path) const override
 
- Public Member Functions inherited from impeller::testing::Screenshot
virtual ~Screenshot ()=default
 
virtual const uint8_t * GetBytes () const =0
 Access raw data of the screenshot. More...
 
virtual size_t GetHeight () const =0
 Returns the height of the image in pixels. More...
 
virtual size_t GetWidth () const =0
 Returns the width of the image in pixels. More...
 
virtual size_t GetBytesPerRow () const =0
 Returns number of bytes required to represent one row of the raw image. More...
 
virtual bool WriteToPNG (const std::string &path) const =0
 

Detailed Description

A screenshot that was produced from MetalScreenshotter.

Definition at line 18 of file metal_screenshot.h.

Constructor & Destructor Documentation

◆ MetalScreenshot()

impeller::testing::MetalScreenshot::MetalScreenshot ( CGImageRef  cgImage)
explicit

Definition at line 10 of file metal_screenshot.mm.

10 : cg_image_(cgImage) {
11 CGDataProviderRef data_provider = CGImageGetDataProvider(cgImage);
12 pixel_data_ = CGDataProviderCopyData(data_provider);
13}

◆ ~MetalScreenshot()

impeller::testing::MetalScreenshot::~MetalScreenshot ( )

Definition at line 15 of file metal_screenshot.mm.

15 {
16 CFRelease(pixel_data_);
17 CGImageRelease(cg_image_);
18}

Member Function Documentation

◆ GetBytes()

const uint8_t * impeller::testing::MetalScreenshot::GetBytes ( ) const
overridevirtual

Access raw data of the screenshot.

Implements impeller::testing::Screenshot.

Definition at line 20 of file metal_screenshot.mm.

20 {
21 return CFDataGetBytePtr(pixel_data_);
22}

◆ GetBytesPerRow()

size_t impeller::testing::MetalScreenshot::GetBytesPerRow ( ) const
overridevirtual

Returns number of bytes required to represent one row of the raw image.

Implements impeller::testing::Screenshot.

Definition at line 32 of file metal_screenshot.mm.

32 {
33 return CGImageGetBytesPerRow(cg_image_);
34}

◆ GetHeight()

size_t impeller::testing::MetalScreenshot::GetHeight ( ) const
overridevirtual

Returns the height of the image in pixels.

Implements impeller::testing::Screenshot.

Definition at line 24 of file metal_screenshot.mm.

24 {
25 return CGImageGetHeight(cg_image_);
26}

◆ GetWidth()

size_t impeller::testing::MetalScreenshot::GetWidth ( ) const
overridevirtual

Returns the width of the image in pixels.

Implements impeller::testing::Screenshot.

Definition at line 28 of file metal_screenshot.mm.

28 {
29 return CGImageGetWidth(cg_image_);
30}

◆ WriteToPNG()

bool impeller::testing::MetalScreenshot::WriteToPNG ( const std::string &  path) const
overridevirtual

Synchronously write the screenshot to disk as a PNG at path. Returns true if it succeeded.

Implements impeller::testing::Screenshot.

Definition at line 36 of file metal_screenshot.mm.

36 {
37 bool result = false;
38 NSURL* output_url =
39 [NSURL fileURLWithPath:[NSString stringWithUTF8String:path.c_str()]];
40 CGImageDestinationRef destination = CGImageDestinationCreateWithURL(
41 (__bridge CFURLRef)output_url, kUTTypePNG, 1, nullptr);
42 if (destination != nullptr) {
43 CGImageDestinationAddImage(destination, cg_image_,
44 (__bridge CFDictionaryRef) @{});
45
46 if (CGImageDestinationFinalize(destination)) {
47 result = true;
48 }
49
50 CFRelease(destination);
51 }
52 return result;
53}
GAsyncResult * result
DEF_SWITCHES_START aot vmservice shared library Name of the *so containing AOT compiled Dart assets for launching the service isolate vm snapshot The VM snapshot data that will be memory mapped as read only SnapshotAssetPath must be present isolate snapshot The isolate snapshot data that will be memory mapped as read only SnapshotAssetPath must be present cache dir path
Definition: switches.h:57

The documentation for this class was generated from the following files: